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| -rw-r--r-- | Documentation/networking/ieee802154.txt | 76 | ||||
| -rw-r--r-- | MAINTAINERS | 12 |
2 files changed, 88 insertions, 0 deletions
diff --git a/Documentation/networking/ieee802154.txt b/Documentation/networking/ieee802154.txt new file mode 100644 index 0000000..a0280ad --- /dev/null +++ b/Documentation/networking/ieee802154.txt @@ -0,0 +1,76 @@ + + Linux IEEE 802.15.4 implementation + + +Introduction +============ + +The Linux-ZigBee project goal is to provide complete implementation +of IEEE 802.15.4 / ZigBee / 6LoWPAN protocols. IEEE 802.15.4 is a stack +of protocols for organizing Low-Rate Wireless Personal Area Networks. + +Currently only IEEE 802.15.4 layer is implemented. We have choosen +to use plain Berkeley socket API, the generic Linux networking stack +to transfer IEEE 802.15.4 messages and a special protocol over genetlink +for configuration/management + + +Socket API +========== + +int sd = socket(PF_IEEE802154, SOCK_DGRAM, 0); +..... + +The address family, socket addresses etc. are defined in the +include/net/ieee802154/af_ieee802154.h header or in the special header +in our userspace package (see either linux-zigbee sourceforge download page +or git tree at git://linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee). + +One can use SOCK_RAW for passing raw data towards device xmit function. YMMV. + + +MLME - MAC Level Management +============================ + +Most of IEEE 802.15.4 MLME interfaces are directly mapped on netlink commands. +See the include/net/ieee802154/nl802154.h header. Our userspace tools package +(see above) provides CLI configuration utility for radio interfaces and simple +coordinator for IEEE 802.15.4 networks as an example users of MLME protocol. + + +Kernel side +============= + +Like with WiFi, there are several types of devices implementing IEEE 802.15.4. +1) 'HardMAC'. The MAC layer is implemented in the device itself, the device + exports MLME and data API. +2) 'SoftMAC' or just radio. These types of devices are just radio transceivers + possibly with some kinds of acceleration like automatic CRC computation and + comparation, automagic ACK handling, address matching, etc. + +Those types of devices require different approach to be hooked into Linux kernel. + + +HardMAC +======= + +See the header include/net/ieee802154/netdevice.h. You have to implement Linux +net_device, with .type = ARPHRD_IEEE802154. Data is exchanged with socket family +code via plain sk_buffs. The control block of sk_buffs will contain additional +info as described in the struct ieee802154_mac_cb. + +To hook the MLME interface you have to populate the ml_priv field of your +net_device with a pointer to struct ieee802154_mlme_ops instance. All fields are +required. + +We provide an example of simple HardMAC driver at drivers/ieee802154/fakehard.c + + +SoftMAC +======= + +We are going to provide intermediate layer impelementing IEEE 802.15.4 MAC +in software. This is currently WIP. + +See header include/net/ieee802154/mac802154.h and several drivers in +drivers/ieee802154/ diff --git a/MAINTAINERS b/MAINTAINERS index 2f6a8fc..a6df68f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2819,6 +2819,18 @@ L: linux1394-devel@lists.sourceforge.net S: Maintained F: drivers/ieee1394/raw1394* +IEEE 802.15.4 SUBSYSTEM +P: Dmitry Eremin-Solenikov +M: dbaryshkov@gmail.com +P: Sergey Lapin +M: slapin@ossfans.org +L: linux-zigbee-devel@lists.sourceforge.net +W: http://apps.sourceforge.net/trac/linux-zigbee +T: git git://git.kernel.org/pub/scm/linux/kernel/git/lumag/lowpan.git +S: Maintained +F: net/ieee802154/ +F: drivers/ieee801254/ + INTEGRITY MEASUREMENT ARCHITECTURE (IMA) P: Mimi Zohar M: zohar@us.ibm.com |
